Open sign



FIG. 1 is an isometric view of an open sign incorporating my new design in a first, horizontal configuration, wherein the portions illustrated in broken lines form no part of the claimed design throughout the drawing figures;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right end elevation view thereof;

FIG. 7 is a left end elevation view thereof;

FIG. 8 is an isometric view of an open sign incorporating my new design in a second, alternate vertical configuration, wherein the portions illustrated in broken lines form no part of the claimed design, and wherein the bottom plan view thereof is identical to FIG. 6, and the left end elevation view is identical to FIG. 5;

FIG. 9 is a front elevation view thereof;

FIG. 10 is a rear elevation view thereof;

FIG. 11 is a top plan view thereof; and,

FIG. 12 is a right side elevation view thereof. 

The ornamental design of an open sign, as shown and described. 